Thank you for your support all this while. The issue is now fixed in the latest update of InDesign.
Please upgrade to the new InDesign 14.0 from your Creative Cloud Application.
If you are unable to see the update yet, click on the menu (three dots) on the top right corner of Creative cloud app and click on “Check for App Updates”.
Let us know your feedback in the comment section.
An error occurred while saving the commentAykut commented
There is a book about 1000 pages. I work as a book, but especially when I get to the last section, the program crashes. I've reconstructed the document, re-created the styles, but it didn't work. I've prepared many books with the same fonts before, but I've never had a problem. My system is 10.14, CC version is 2019. How do you suggest a solution?